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Typhoon Dot, known in the Philippines as Typhoon Kuring, was one of several tropical cyclones to impact southern China and northern Vietnam during the 1989 Pacific typhoon season. Originating from a tropical disturbance near Palau on June 4, Dot tracked west-northwestward towards the Philippines. Crossing the country on June 6, the system moved over the South China Sea and attained typhoon status. Late on June 8, Dot reached its peak intensity with winds estimated at 185 km/h (115 mph). The system weakened slightly the next day before making landfall in Hainan Island. A weakened storm then entered the Gulf of Tonkin before striking northern Vietnam and dissipating on June 12. Throughout its course, Typhoon Dot produced heavy rains in the Philippines, China and Vietnam, resulting in significant damage and eight fatalities. The most severe impacts took place on Hainan Island where 1,400 homes were destroyed and another 60,000 were damaged. In Vietnam, Dot exacerbated flooding triggered in late May by Tropical Storm Cecil. ==Meteorological history== In early June 1989, the Joint Typhoon Warning Center (JTWC) began monitoring a tropical disturbance that developed over the southern Philippine Sea. Over the following two days, convection associated with this system increased and became better organized. This development prompted the issuance of a Tropical Cyclone Formation Alert on June 4 as the system moved just north of Palau. By this time, the Japan Meteorological Agency (JMA) classified the system as a tropical depression. Early on June 5, the JTWC followed suit and issued their first advisory on Tropical Depression 05W, at which time the system was situated roughly 555 km (345 mi) southwest of the island of Samar in the Philippines.〔 Due to the cyclone's proximity to the Philippines, the Philippine Atmospheric, Geophysical and Astronomical Services Administration also monitored the storm, assigning it with the local name ''Kuring''.〔 Tracking generally towards the west-northwest, the depression intensified into a Tropical Storm and was given the name Dot, 12 hours before making landfall in Samar on June 6.〔 Crossing over the central Philippines and the Sibuyan Sea, Tropical Storm Dot grew in size and intensity. By June 7, the storm entered the South China Sea and acquired a brief northerly component to its track. At the time, forecasters at the JTWC anticipated that Dot would interact with an approaching weather front and track north of Hainan Island. The front failed to materialize, however, and the storm resumed a west-northwesterly track. Owing to low wind shear and warm waters, Dot attained typhoon status on June 8. Following the development of an eye, the storm reached its peak intensity later that day as a Category 3 equivalent typhoon on the Saffir–Simpson Hurricane Scale, with maximum sustained winds estimated at 185 km/h (115 mph).〔 By the morning of June 9, the JMA assessed Dot to have attained ten-minute sustained winds of 150 km/h (90 mph) and a barometric pressure of 955 mbar (hPa; 28.2 inHg).〔 Gradual weakening occurred as Dot neared Hainan Island on June 9. The typhoon subsequently made landfall near Sanya on June 10 and weakened to a tropical storm. Later that day, the storm emerged into the Gulf of Tonkin before making its third and final landfall near Hai Phong, Vietnam. Once onshore, Dot quickly degraded over the mountainous terrain of northern Vietnam, and was last noted on June 12.〔〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Typhoon Dot (1989)」の詳細全文を読む スポンサード リンク
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